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FT146 

 27 

The Ramsey Kit Warranty

 

 

Please read carefully BEFORE calling or writing in about your kit. Most 
problems can be solved without contacting the factory. 

 

Notice that this is not a "fine print" warranty. We want you to understand your rights and ours too! All 
Ramsey kits will work if assembled properly. The very fact that your kit includes this new manual is 
your assurance that a team of knowledgeable people have field-tested several "copies" of this kit 
straight from the Ramsey Inventory. If you need help, please read through your manual carefully, all 
information required to properly build and test your kit is contained within the pages!   
 

1. DEFECTIVE PARTS:

 It's always easy to blame a part for a problem in your kit, Before you conclude 

that a part may be bad, thoroughly check your work. Today's semiconductors and passive components 
have reached incredibly high reliability levels, and it’s sad to say that our human construction skills 
have not! But on rare occasions a sour component can slip through. All our kit parts carry the Ramsey 
Electronics Warranty that they are free from  defects for a full ninety (90) days from the date of 
purchase. Defective parts will be replaced promptly at our expense. If you suspect any part to be 
defective, please mail it to our factory for testing and replacement. Please  send only the defective part
(s), not the entire kit. The part(s) MUST be returned to us in suitable condition for testing. Please be 
aware that testing can usually determine if the part was truly defective or damaged by assembly or 
usage. Don't be afraid of telling us that you 'blew-it', we're all human and in most cases, replacement 
parts are very reasonably priced.   
 

2. MISSING PARTS:

 Before assuming a part value is incorrect, check the parts listing carefully to see 

if it is a critical value such as a specific coil or IC, or whether a RANGE of values is suitable (such as 
"100 to 500 uF"). Often times, common sense will solve a mysterious missing part problem. If you're 
missing five 10K ohm resistors and received five extra 1K resistors, you can pretty much be assured 
that the '1K ohm' resistors are actually the 'missing' 10 K parts ("Hum-m-m, I guess the 'red' band 
really does look orange!")  Ramsey Electronics project kits are packed with pride in the USA. If you 
believe we packed an incorrect part or omitted a part clearly indicated in your assembly manual as 
supplied with the basic kit by Ramsey, please write or call us with information on the part you need 
and proof of kit purchase 
 

3. FACTORY REPAIR OF ASSEMBLED KITS:

  

To qualify for Ramsey Electronics factory repair, kits MUST:     
1. NOT be assembled with acid core solder or flux. 
2. NOT be modified in any manner. 
3. BE returned in fully-assembled form, not partially assembled. 
4. BE accompanied by the proper repair fee. No repair will be undertaken until we have received the 

MINIMUM repair fee (1/2 hour labor) of $25.00, or authorization to charge it to your credit card 
account. 

5. INCLUDE a description of the problem and legible return address. DO NOT send a separate letter; 

include all correspondence with the unit. Please do not include your own hardware such as 
non-Ramsey cabinets, knobs, cables, external battery packs and the like. Ramsey 
Electronics, Inc., reserves the right to refuse repair on ANY item in which we find excessive 
problems or damage due to construction  methods. To assist customers in such situations, 
Ramsey Electronics, Inc., reserves the right to solve their needs on a case-by-case basis. 

 
The repair is $50.00 per hour, regardless of the cost of the kit. Please understand that our technicians 
are not volunteers and that set-up, testing, diagnosis, repair and repacking and paperwork can take 
nearly an hour of paid employee time on even a simple kit. Of course, if we find that a part was 
defective in manufacture, there will be no charge to repair your kit (But please realize that our 
technicians know the difference between a defective part and parts burned out or damaged through 
improper use or assembly). 

 
4. REFUNDS: 

You are given ten (10) days to examine our products. If you are not satisfied, you may 

return your unassembled kit with all the parts and instructions and proof of purchase to the factory for 
a full refund. The return package should be packed securely. Insurance is recommended. Please do 
not cause needless delays, read all information carefully. 

Summary of Contents for FT146

Page 1: ...ns on 12 14 Volts DC at less than 1 amp Easy assembly and hook up Informative manual answers questions on theory hook ups and uses enhances resale value too Add our case set for a finished Pro look Ca...

Page 2: ...Finder HR Series HF All Mode Receivers QRP Series HF CW Transmitters FR146 2 Meter Receiver CPO3 Code Practice Oscillator QRP Power Amplifiers RAMSEY MINI KITS Many other kits are available for hobby...

Page 3: ...and Alignment 19 Power Supply Considerations 21 Verifying RF Power Output 21 Troubleshooting Guide 23 Enclosure Ideas 24 Microphone Considerations 24 Crystal Requirements 25 Parts Layout Diagram 26 R...

Page 4: ...ealed somewhere in the Orient Building your own rig is one of the most satisfying and rewarding experiences you can have and that s what ham radio is all about This little easy to understand two meter...

Page 5: ...round 48 MHz Q4 is another tripler multipling up the 48 MHz to 144 MHz Inductors L5 11 and capacitors C25 17 18 10 for the band pass filter for the three times output frequency From here on out we re...

Page 6: ...K C14 6 100 pf disc capacitor marked 100 or 101 C6 11 16 24 26 29 1 470 pf disc capacitor marked 470 or 471 C30 13 001 uf disc capacitor marked 001 or 1000 or 102 C7 8 23 31 32 33 37 38 39 40 41 44 45...

Page 7: ...498 or 2SC2570A VHF UHF NPN transistor marked C2498 or 2570A Q3 1 NE021 flat pack NPN transistor marked 021 Q4 1 2N3866 metal can NPN transistor Q5 1 SD1127 metal can RF power transistor Q6 1 2N3906 s...

Page 8: ...ical relationship to each other so there s minimal chance of inserting wires into wrong holes Second whenever possible we install in an order that fits our Learn As You Build Kit building philosophy F...

Page 9: ...6 Install C39 001 uf disc capacitor marked 001 1 nf or 102 7 Install C38 001 uf disc capacitor marked 001 1 nf or 102 8 Install C36 01 uf disc capacitor marked 01 or 10 nf or 103 9 Install R14 100K oh...

Page 10: ...re lead is exposed above the board In soldering do not be afraid of using enough heat to make a good solid connection 27 Install R21 2 2K ohm red red red 28 Install C45 001 uf marked 001 1 nf or 102 2...

Page 11: ...constant In this case we wish to hold the voltage to the crystal oscillator steady to keep us on frequency even with a poorly regulated disc capacitor power supply 48 Install R28 100 ohm brown black b...

Page 12: ...021 Carefully remove it from its protective paper and bend all three leads down 90 degrees from its body Notice how one lead is longer than the others that lead the collector must be installed exactly...

Page 13: ...derneath coats nicely with solder Tin all the way up to the ferrite core body Your finished RF chokes should look like this Do not install either part yet 77 Winding L10 and L12 Locate the two small b...

Page 14: ...FT146 14...

Page 15: ...FT146 15...

Page 16: ...iously 86 Install C4 01 uf disc capacitor marked 01 or 10 nf or 103 87 Install L11 pink slug tuned coil 88 Install aluminum shield can cover over L11 89 Install C19 10 pf disc capacitor marked 10 or 1...

Page 17: ...iously Ensure it sits flush 108 Install L1 6 hole ferrite bead RF choke you wound 109 Install C1 01 uf disc capacitor marked 01 or 103 or 10 nf 110 Locate Q6 SD1127 RF power transistor This transistor...

Page 18: ...s completes our assembly of the FT146 two meter FM transmitter Now s a good time to give your masterpiece a good going over being especially alert for any bridged over solder joints misplaced componen...

Page 19: ...ven with the top of their plastic coil form If a slug binds gently rock it back and forth till it loosens up Be very careful not to crack the slug as they are brittle Slowly rotate each slug clockwise...

Page 20: ...sized and matched case for your FT146 Study the following sections regarding the DC power supply and RF power indication and operate your transmitter in accord with good amateur radio practice YOUR P...

Page 21: ...to a socket for the bulb of your choice or even soldered directly to the bulb RF voltage levels in this transmitter can vary from 2 to 25 volts RMS depending on various factors Typically 1 watt power...

Page 22: ...upply immediately because your Q6 RF power transistor is heading to self destruction while probably interfering with every TV set in the neighborhood A poorly matched antenna along with higher supply...

Page 23: ...way detail any and all problems that can rear their ugly head but should get you on the way to solving most errors We d like to be able to forsee a problem a builder may encounter but the sheer numbe...

Page 24: ...omy and rugged portability you will find that the circuit board can be mounted nicely in a standard VHS videotape storage box which also gives room for additional microphone power and antenna connecto...

Page 25: ...a common dual op amp made by many manufacturers and is commonly stocked by most parts stores There are also acceptable standard replacements for some of the semiconductors used in the transmitter SK...

Page 26: ...FT146 26 FT146 PARTS LAYOUT DIAGRAM...

Page 27: ...h be assured that the 1K ohm resistors are actually the missing 10 K parts Hum m m I guess the red band really does look orange Ramsey Electronics project kits are packed with pride in the USA If you...

Page 28: ...TTER KIT RAMSEY ELECTRONICS INC 590 Fishers Station Drive Victor New York 14564 Phone 585 924 4560 Fax 585 924 4555 www ramseykits com REQUIRED TOOLS Soldering Iron Ramsey WLC100 Thin Rosin Core Solde...

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